Slim DIN supplies pack more power
Product News 1/30/2006 Post a comment
XP Power says its DNR family of slimline DIN-rail power supplies for factory automation and industrial process control have higher power density than competing supplies.
How to design a dimming fluorescent electronic ballast
Design How-To 1/30/2006 1 comment
Dimming fluorescent lamps is an attractive feature that provides mood and brightness effects as well as having tremendous energy savings potential. But how can you design one. It is a difficult task that requires knowledge of fluorescent lamp electrical behavior, control theory experience and resonant converter design skills. Learn how with this article.
DC/DC lays claim to world's smallest PC supply
Product News 1/26/2006 Post a comment
Mini-box.com (Ituner Networks) says its picoPSU-120 is the world’s tiniest PC power supply. Delivering up to 120 watts (140 watts peak) from a 12 volt input, the 5-output DC/DC supply measures just 31-by-45-by-20 mm.
High-performance controllers boost the PoE connection
Product News 1/26/2006 Post a comment
PoE product recap - With power-over-Ethernet (PoE) the closest thing to “the next big app” in the largely mature power area, vendors are bringing new controller systems to market with higher levels of integration, higher power capability, and a lower cost per port.
No need to fear: SEPIC outperforms the flyback
Design How-To 1/25/2006 Post a comment
This apples-to-apples comparison of SEPIC versus flyback dc/dc converter topologies is not based only on simulation, but on actual circuits. It's revealing, illuminating, and informative, if power-supplies are your concern. And even if your specifics are different, this article will help you understand the issues and figures of merit.
How to optimize power in ICs for portable products
Design How-To 1/24/2006 Post a comment
System designers must understand the power consumption, power states and related timing issues of each component in order to optimize system power. The first step for system designers is to analyze and optimize the components that consume the most power.
Here's how to minimize the total power consumption of a consumer device.
UPS touts greater flexibility, reliability, cost savings
Product News 1/20/2006 Post a comment
Touting gains in reliability and flexibility as well as cost benefits, XP Power's 1.5 to 6 kVA on-line uninterruptible power supplies (UPSes) in the Xi family use just a single battery module and employ dual inputs to ensure supply integrity. A rotating (back-lit) alphanumeric LCD, remote emergency power off (REPO) connection and intelligent overload protection add to functionality.
Cloaking the non-idealities of DC-DC converter stability
Design How-To 1/20/2006 Post a comment
Power supply circuits present difficult integration challenges in the form of power density and delivery. The main challenge in power supply circuits is guaranteeing stability over a wide range of LC and load combinations. Here's a solution that can help meet your needs.
Ultracapacitors fill automotive power gaps
Design How-To 1/18/2006 Post a comment
Enormous surface area and extremely small charge separation gives the ultracapacitor outstanding capacitance. Combining high-energy lead-acid batteries and ultracapacitors can create a system that has the best of both technologies.
Industrial supply withstands 4 kV surges
Product News 1/18/2006 Post a comment
Absopulse Electronics’ HIW 150, a 150-watt AC/DC power supply designed for an operating environment characterized by frequent voltage spikes, will withstand 4 kV surges as per the requirements of EN61000-4-5.
Graphite foam battery takes aim at lead-acid battery industry
News & Analysis 1/18/2006 Post a comment
A graphite foam battery patent is setting the stage for the entrance into the market for Firefly Energy, a spinoff from Caterpillar Incorporated. The company says this could be the next generation of lead-acid battery technology with applications focused on the hybrid electric vehicles market.
Minimizing Servoamplifier-Sourced Noise
Design How-To 1/17/2006 Post a comment
PWM servo amplifiers energize servo motors with current waveforms under control of fast-rise voltage pulses. The faster the rise rate of the drive pulses, the lower the energy dissipation in the servo amplifier's MOSFET or IGBT power semiconductors, and amplifier efficiencies in 95% region become possible. Unfortunately, there's a rise-rate tradeoff: the faster the rise rate, the more likely is the amplifier to source noise currents that interfere with neighboring circuits.
Rad-hard DC/DCs elevate long-flying satellites
Product News 1/14/2006 Post a comment
International Rectifier's LS Series of radiation-hardened (RAD-Hard™) low-voltage, single- and dual-output DC/DC converter simplify power management for low Earth orbit (LEO), middle Earth orbit (MEO), and geostationary Earth orbit (GEO) satellites.
Half-brick economizes RF power amp applications
Product News 1/13/2006 Post a comment
Tyco Electronics' JHW250 half-brick, which delivers up to 250 watts for powering radio frequency amplifiers, is designed as a lower-cost solution for wireless base station applications, telecom equipment, distributed power architectures, and wireless networks.
California bets on solar
News & Analysis 1/12/2006 Post a comment
A solar initiative approved by the California Public Utilities Commission could make the Golden State one of the world's largest producers of solar energy.
PSMA reissues second printing of magnetics bible
Product News 1/12/2006 Post a comment
"Soft Ferrites - Properties and Applications," which provides extensive information on applying ferrites and associated wound components to power supply design, is available from the Power Sources Manufacturers Association. This reprinted second edition is heavy with hands-on information, including graphs and tables, and design procedures are supported by many working examples of inductors and transformers.
CPU power control: Compare single-edge, dual-edge controller architectures
Design How-To 1/11/2006 Post a comment
Current requirements in the past eight years have increased dramatically from 30A to peak currents as high as 130A. Slew rate requirements have increased in a similar manner as have voltage transitions to levels exceeding 300V/microsecond, add to that tighter voltage accuracy of the CPU. The days of using a single-phase switching regulator to address these stringent requirements are long gone. Here's some help navigating these demands with better controller architectures.
600-watt supplies retain 5-year warranty
Product News 1/10/2006 Post a comment
Lambda's single-output 300- and 600-watt power supplies in the company HWS series, for powering industrial equipment in very high reliability applications, retain the same five-year warranty of the series' lower-power models.
Power strip makes medical grade
Product News 1/10/2006 Post a comment
Interpower's Medical-Grade NEMA Socket Strip, part of the company's NEMA socket strip product line, is rated for 15 amp, 125 VAC service and patient-contact medical and dental applications requiring multiple electrical outlets.
IT power management unit eases remote monitoring
Product News 1/6/2006 Post a comment
Aphel's rPower Remote Power Management unit, a combination high-visibility ammeter and RS-232 bus based system for datacenter and IT applications, is designed to greatly simplify and reduce the cost of remote power monitoring in a standard setting.